Developer tools
tools and calculators.
17 practical tools with clear inputs and explanations. Choose a tool below, or explore a role-based toolbox for a collection that fits your day.
JSON Pointer query
Select a nested value using an exact JSON Pointer, preserving large numeric tokens.
JSON Merge Patch
Apply an object merge patch or replace a JSON target with a new value.
JSON Patch applier
Apply a checked sequence of add, remove, replace, move, copy and test operations.
Structural JSON diff
Compare nested JSON values by keys and array positions without rounding large identifiers.
JSON flatten & rebuild
Create a reversible typed JSON Pointer manifest and rebuild the original structure.
Base64 encoder & decoder
Encode Unicode text to Base64, or decode it back.
URL encoder & decoder
Percent-encode a URL component or decode escaped text.
HTML entity encoder & decoder
Escape special characters or decode common HTML entities.
JSON formatter
Format or minify JSON and catch syntax errors.
SHA hash generator
Create SHA-256, SHA-384 or SHA-512 hashes of text.
Password generator
Generate random passwords on your device.
UUID generator
Generate random version 4 UUIDs.
Number base converter
Convert whole numbers between bases 2 to 36 exactly.
Basic Auth header generator
Create an HTTP Basic authorization header locally.
JWT decoder
Inspect a JSON Web Token’s header and payload locally.
Text & binary converter
Encode UTF-8 text as binary bytes and decode it back.
JSON viewer
Explore a collapsible JSON tree, search values, format and minify.